Chemical-container



R. E. KIHTLEY. CHEMICAL CONTAINER. APPLICATION FILED IIIAILZS, I9I9.

Patented Mar. 15

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CHEMICAL'CONTAINER.

APPLICATION FILED MAR. 2s, I9I9.

Patented Mar. 15, 1921.

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UNITED STATES PATENT FFIC.

CHEMICAL-CONTAINER.

Specification of Letters Patent.

Application led March 26, 1919. Serial, No. 285,305.

To all whom t may concern Be it known that I, RICHARD E. KIRTLEY, a citizen of the United States, residing at Kansas City, inthe county of Jackson and State of Missouri, have invented certain new and useful Improvements in Chemical-Containers; and I do declare 'the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it'appertains to make and use the same, reference being had to the accompanying drawings, and to the iigures of reference marked thereon, which form a part of this specification.

This invention relates t0 chemical containers for introducing suitable chemicals into an oil well to remove accumulations, such as paraiin, asphaltum, and other objectionable surfaces which have a tendency to clog up the interstices of the reticulated lining in soft sand wells or the capillaries in hard sand wells.

It is well known that oil wells sometimes cease to iow because the capillaries or the interstices of the lining become clogged on account of accumulations, such as paraflin, asphaltum, and the like. If these accumulations are removed the well will be restored.

Various attempts have been made heretofore to remove these accumulations, for example, by introducing steam or acids to dissolve the hydrocarbon solids. Steam has not proved eiiicient, and while chemicals of various kinds efficiently remove the accumulations, it has been the practice heretofore to pour large quantities into the well with the result that a considerable portion of the chemical is lost by adhering to the side above the zone to be treated.

It is the purpose of my invention to apply the chemicals locally so that relatively small quantities will suffice.

In carrying out my invention I provide a container which will hold the requisite charge of chemicals and which may be lowered into the bottom of the well where it is to be applied before it is released, and after it has reached the zone of application to discharge the chemicals to permit it to attack the accumulations adhering to lthe surrounding walls so that the flow of oil from surrounding strata may be resumed.

In the drawings,

Figure I is a view partly in section and partly in elevation of a container constructed in accordance with myk invention, the outer orifice for the container being sealed.

Fig. II is a similar view with the seal broken to permit the chemicals to flow into the interior of the well.

Fig. III is a side elevation view of a container complete.

Fig. IV is a detail perspective view of the latching device for retaining the seal, dlsrupter and nozzle in retracted position.

Fig. V is a sectional view through a modified form of container.

Fig. VI is a fragmentary sectional view of the same, showing position of the parts when the seal` is broken.

Fig. VII is a sectional View on the line VII-VII of Fig. VI.

Referring now to the drawings by numerals` of reference:

l designates the container which may consist of a receptacle made up of a plurality of pipe sections, the upper one of which is provided with bail 2 by means of which a cord, cable or rope may be attached to lower the device into the well. The bottom of the container is provided with a sleeve 3 engaging a head 4 which constitutes part of the seal for the receptacle, the hea-d 4 having a central orifice, 5 in which is a tube 6 surrounding a vertically slidable seal disrupter and nozzle 7, which in Figs. I and II as shown as a hollow tubular member provided near its upper end with a plurality of perforations 8, the upper end of the nozzle 7 being provided with a head 9, which closes that end of the nozzle. Threaded into the head 4 is a sleeve l0 between which and the tube 6 are spring latch members 11 and I2, the upper outer ends 13 and 14 of which bear against the head 4 and the lower ends of which are provided with jaws 15 and 16 to engage the collar I7 on the nozzle 7, when the nozzle is in retracted position as shown in Fig. II.

At the bottom of the standard or nozzle 7 is a foot or base 18 which may be of any approved construction and which may be suitably attached thereto, but I have here shown it as consisting of a disk having 4bracket arms 19 and 20', whereby it may be .secured to the. open end of the member 7 so that the chemical entering the orifices 8 may discharge into the well.

When it is desired to introduce chemical into the well the container is sealed by seat- Patented Mar. 15, 1921.v

ing the valve head 9 upon the head 2i and sealing the same by a disruptable material,

. such as wax or the like, as shown in Fig. I.

The device is then lowered into the well until the base or foot 18 strikes against the bottom when the weight of the receptacle will be suiicient to cause the valve-head 9 to disrupt or break through the wax and assume a retracted position as shown in Fig. II, and to be held in such position by engagement of the jaws 15 and 16 with the collar 17 as shown. The chemicals will then discharge through the orifices 8 and the dischar end of the nozzle or standard 7 into the well and locally attack the wall thereof to free it from ob'ectionable accumulations.

In Figs. V to II, both inclusive, the receptacle 1 is provided with a head 21 having a valve seat 22 to receive the valve head 23 normally sealed by the wax plug 24. Depending from the valve head 23 is a standard or solid stem 25 of less diameter than the orifice 26, the standard 25 carrying the spring arms 27 and 28 which are provided with shoulders 29 and 30 to engage the upper face 31 of the cap 32 carried by the barrel 33 which is secured to the head 21 in any appropriate manner. The valve stem 25 is provided with a base 34 at its lower end which may contact with the bottom of the well when the container is lowered therein. When the device constructed in accordance with the form illustrated in Figs. V and VII, both inclusive, is lowered into the well, the base 34 will strike against 4the bottom thereof and force the valve 23 from its seat to dislodge the wax 24, whereupon the chemicals may be discharged through. the orifice 26 and the barrel 33 as clearly indicated in Fig. VI.

After the chemicals have been discharged,

the device may be removed from the well to be subsequently recharged in an obvious manner.

The plates 18 and 34 serve as deiiector plates so that when the chemical is discharged from the receptacle 1 and passes through either the tube 7 or the tube 33, it

will strike either the plate `18 or 34, according to the construction used and be deiected toward a horizontal p1ane` so as to be directed into contact with thewall of the well to be attacked by the acid. v

As an example of the wax adapted to be used as a sealing medium I will mention paraffin, which may constitute the sealing medium when hydro-chloric acid is employed as a cleaning fluid since hydrochloric acid will not actively attack parafiin.

From the foregoing it will be apparent that a device constructed in accordance with my invention will enable the operator to locally apply the full charge of chemicals without liability of any of it becoming wasted and thereby enabling the well to be freed of accumulations with a considerably less quantity of chemicals than would ordinarily be. employed by known methods.

Having described my invention, what I claim as new therein and desireto secure by Letters-Patent is l. A container for introducing chemicals into an oil well comprising a receptacle with an opening in the bottom thereof, a disruptable seal to close the opening, and a hollow standard having a perforate wall insertible through the disruptable seal, said hollow standard having a discharge opening outside the receptacle.

2. A container for introducing chemicals into an oil well, comprising a receptacle having an opening in the bottom thereof, a dlsruptable seal to close the opening, a standard slidable through the opening to disrupt the seal, and` a transverse baffle carrled by the lower end of the standard against which the discharged acid may strike to be deflected in a horizontal plane,

3. A container for introducing chemicals into an voil well, comprising a receptacle having an opening in the bottom thereof, a dlsruptable seal' to close the opening, a standard slidable'through the opening to disrupt the seal, a transverse baffle carried by the lower end of the standard against whlch the discharged acid may strike to be deflected in a horizontal plane, and a latch Afor holding the standard in its sealed disrupting position. 1 4. A contalner for introducing chemicals mto an o1l well, comprising a receptacle having an openingin the bottom thereof,

having an opening in the bottom thereof, a

longitudinally movable member for normally closlng the opening, a rod connected threto, and a bale at the lower end of the ro In testimony whereof I aix m signature.

. RICHARD E. RTLEY. 

